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Primary radiator

A radiator and primary technology, applied in electrical components, waveguide horns, circuits, etc., can solve the problems of expensive molding molds, inability to manufacture waveguide primary radiators, and complex structures.

Inactive Publication Date: 2008-08-27
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the above-mentioned prior art structure, there is such a problem in the manufacturing method of die-casting, that is, in order to make the horn of the primary radiator and the waveguide integrally formed, so its structure becomes complicated; forming mold
In addition, due to die-casting, there is also the problem of heavy weight
[0009] In addition, although the manufacturing method of spinning can reduce the weight of the primary radiator, there is a problem that only horns and waveguides with circular cross-sectional shapes can be manufactured.
[0010] In addition, in the bending manufacturing method, although corrugations with a noise reduction effect can be added and a light-weight primary radiator can be manufactured, there is a problem that the corrugations and waveguide cannot be manufactured. Primary radiator with elliptical cross-section

Method used

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Experimental program
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Embodiment approach 1

[0029] 3 is an overall sectional view showing a satellite broadcast / satellite communication receiving converter (LNB: Low Noise Converter Block). The primary radiator 2 in this LNB consists of a horn part 2a and a waveguide part 2b. In addition, only the primary radiator 2 is shown in the figure below.

[0030] The primary radiator 2 is made by deep-drawing a thin metal plate to integrally form the horn part and the waveguide part. In deep drawing, sheet metal processing is performed in the same manner as spinning and sheet metal bending processing. Therefore, it is possible to manufacture the waveguide with the horn without using a complicated and expensive die-casting molding die.

[0031] In addition, a conductive material having plastic deformation properties can be used as the sheet material for deep drawing, but it is not limited to the above-mentioned thin metal sheet, and may be a plated resin sheet material, for example.

[0032] Fig. 2 is a detailed view showing t...

Embodiment approach 2

[0036] Fig. 1 is a detailed view showing the primary radiator 3 in the second embodiment, Fig. 1(a) is a side view showing the primary radiator 3, Fig. 1(b) is a front view showing the primary radiator 3, Fig. 1(c) is a sectional view showing the A-A' section of the primary radiator 3 in FIG. 1(b).

[0037] As shown in the front view of FIG. 1( b ), both the cross-sectional shape of the horn portion 3 a and the cross-sectional shape of the waveguide portion 3 b are elliptical, which is different from the circular shape of the first embodiment. The cross-section of the wide-mouth side of the horn part 3a is flange-shaped, and the shape and size of the narrow-mouth side cross-section are the same as those of the opening end of the waveguide part 3b. The other end of the waveguide portion 3b away from the horn portion 2a is closed.

Embodiment approach 3

[0039] Fig. 4 is a detailed view showing the primary radiator 4 in this embodiment, Fig. 4 (a) is a side view showing the primary radiator 4, Fig. 4 (b) is a front view showing the primary radiator 4, Fig. 4 (c) is a sectional view showing the A-A' section of the primary radiator 4 in FIG. 4(b).

[0040] As shown in the front view of FIG. 4( b ), the cross-sectional shape of the horn portion 4 a and the waveguide portion 4 b is a rectangle different from the circular shape of the first embodiment and the elliptical shape of the second embodiment. The horn portion 4a is in the shape of a quadrangular pyramid with its tip cut away, and its bottom is in the shape of a flange. The waveguide portion 4b is in the shape of a square prism, and the shape and size of the opening of the waveguide portion 4b are the same as the narrow opening of the horn portion 4a. The other end of the waveguide portion 4b away from the horn portion 4a is closed.

[0041]As shown in Figures 1 to 4, in ...

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Abstract

To produce a primary radiator including a horn part and a waveguide, the cross section of which is elliptical shape, and which can be easily formed, so that production cost is reduced, a primary radiator 3 of the present invention is so arranged that it includes a horn part 3 a and a waveguide 3 b which are formed in one piece by deep-drawing process.

Description

technical field [0001] The present invention relates to a primary radiator (Primary Radiator) such as a converter (LNB) for satellite broadcasting / satellite communication reception, and in particular to a primary radiator composed of a horn part and a waveguide part and a manufacturing method thereof. Background technique [0002] A parabolic antenna for receiving satellite broadcasting / satellite communication is composed of a reflector that concentrates radio waves transmitted from a satellite at one point; a primary radiator that takes in the concentrated radio waves; A converter that amplifies incoming radio waves and converts their frequency. [0003] The primary radiator has a waveguide that is open at one end and closed at the other end, and has, for example, a circular cross-sectional shape, and first and second probes inserted into the inside from the wall of the waveguide. The first probe is perpendicular to the second probe, and the distance between the two probes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q13/02
CPCH01Q13/0283H01Q13/02
Inventor 山口幸弘
Owner SHARP KK